Wittaya Jindaluang, Somchai Anusontpornperm, & Irb Kheoruenromne. (2009). Diversity and Fertility of Soils in Doi Inthanon Area, Chiang Mai Province. Agriculture and Natural Resources, 43(5), 1–8. Retrieved from https://li01.tci-thaijo.org/index.php/anres/article/view/244772